Combined electric bell and annunciator



(No Model.)

J. I. MGLAUGHLIN. GOMBINED ELECTRIC BELL AND ANNUNGIATOR.

No. 406,293. Patented July 2, 1889 liiii I: INVENTOR WITNESSES UNITED STATES PATENT OFFICE.

JAMES F. MCLAUGHLIN, OF PHILADELPHIA, PENNSYLVANIA.

COMBINED ELECTRIC BELL AND ANNUNCIATOR.

SPECIFICATION forming part of Letters Patent N0. 406,293, dated July 2, 1889.

Application filed February 8, 1889- Serial No. 299,111- (No model.)

To all whom it may concern.-

Be it known that 1, JAMES F. IVIOLAUGHLIN, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in a Combined Electric Bell and Annunciator, of which the following is a specification.

My invention relates to improvements in electric bells and annunciators, the object being the production of an improved construction of bell whichwill render the device attractive and ornamental in appearance, and also to provide a simple and inexpensive indicating or annunciating mechanism operated by the bell-sonndin g armature.

In a patent, No. 393,998, granted to me on the 4th day of December, 1888, for improvements in electric bells,I show, describe, and claim a peculiar construction of magnet and armature, and I may, if desired, use such ma net and armature to operate the indicator or annunciator,as will more fully appear from the following detailed description, in which reference is made to the accompanying drawings, which represent, in

Figure 1,a side elevation of an electric bell and annunciator embodying my invention. Fig. 2 is a front elevation or face view thereof. Fig. 3 is a rear elevation thereof with the indicator-plate in its normal position; and Fig. 4 is a detail view of a portion of the indicating mechanism, the indicator-plate being in the position it assumes when the mechanism is operated upon.

Referring by numerals to said drawings, in which similar numerals of reference denote corresponding parts in the several figures, the numeral 1 designates the frame, which is substantially rectangular in form, and is provided in its upper and lower ends with openings 2, to receive screws or the like for securing the frame in place.

The bell 3 is secured to the front of the frame and is in general outline similar thereto, the lower portion 4 being enlarged or bulging to accommodate the devices in the frame, and the upper part 4 being curved inwardly or reduced, the bell thus giving a neat and attractive appearance to the device.

In the frame is arranged the electro-magnet 5, having an angular polar extension 5, the angular armature 6, the spring 7, having the platinum contact 8 and supporting the armature, the platinum-tipped screw 9, and the circuit-wires 1O 10 and 11 11', all arranged and operating substantially as described in my patent hereinbefore referred to.

One arm of the angular armature is provided with a lug, stud, or projection 12, which is adjacent to the upper end 13 of the bell-crank or knuckle lever 14, pivoted or fulcrumed at 15 to the frame, and with its lower end 16 extending through a passage or recess in the frame. The arms of the said bell-crank lever are of different lengths, the lower one being the longer, and consequently the heavier,

whereby said arm tends to move in the direction indicated by the arrow, the purpose of which is to cause said arm to engage the upper edge of the lugor projection 17 on the illdicator-plate 18,which is hinged to the frame, as shown, the arm thus serving to retain said indicator-plate in an elevated condition.

Then the parts of the device are in. their normal condition, the indicator-plate is retained in an elevated position by the long arm of the bell-crank lever, as clearly shown in Fig. 3, and it will be understood that the incoming current passes from the circuit-wire 11 through the coil of the electro-magnet, through the contact-screw to the platinum contact on the spring supporting the angular armature, and by said spring to the frame 1, and out by the wire 11, vibrating said armature and causing the projection on the arm thereof to contact with the upper arm of the bell-crank lever, moving the lower arm from engagement with the lug on the indicatorplate, when said plate will drop and disclose the sign or indication thereon. It is evident that the vibrations or movements of the armature cause the sounding of the bell.

A cord or chain 19 is attached to the indi- Gator-plate for returning the same to its normal position, when the bell-crank lever will also assume its original position and the long arm thereof will engage the lug on the indicator-plate and retain it in an elevated position.

It will be observed by reference to Fig. 3, that the spring 7, which carries the platinum contact 8, is secured to the armature and supports the same. This spring is also secured to the frame 1, its end being simply inserted into a slot in a lug 7 in the frame and then soldered to the same. This construction saves the use of a screw, which in a device of this character is a saving" of some importance.

Having now fully described my invention, I 01 aim and desire to secure by Letters Patent 1. The combination, with an electro-magnot, of an an gle-armature provided at its free end with a lug, a knucklelever with one end in operative relation to the lug, and an indieatorplate provided with a lug in direct operative relation to the other end of the lever, substantially as described.

A combined electric bell and annunciator consisting of a frame, an electro-magnet and bell-armature supported by said frame, a knuckle-lever with one end in operative relation to the armature and the other end extending through a passage or recess in the frame, and an indicater-plate hinged to the frame so as to be exposed to view in one position and hidden from View in another p0sition, and provided with a lug or projection engaged an d locked by the lever when the plate is hidden from View, substantially as described.

3. A combined electric bell and annunciator comprising a frame, an electro-magnet, a bell-armature and a knuckle-lever in operative relation to the armature and extending through a passage in the frame, a bell inclosing and concealing said mechanism, and a gravity-annunciator normally engaged and held in position where it is hidden from view by said knuckle-lever, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing" witnesses.

JAS. F. l\[cliAUGlIlilN.

\Vi tnesses:

THOMAS H. .ll'UNTER, FRANK M. MILLER. 

